Origin
Brazil, Colombia, Southern and central Africa
Brazil, Southern and central Africa, Sri Lanka
Color
Greenish, Blue, Colorless, White, Green
Red, gray
Streak
White
Red, Black
For which Rashi?
-
-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
-
Ring Metal
-
-
Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
-
Talisman
-
-
Tenacity
-
-
Solubility
-
Insoluble in acids
Durability
-
-
Specific Gravity
3.08-3.124.20-4.30
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven, Conchoidal
Cleavage
{010} Perfect
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
7.56-6.5
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Adamantine
Pleochroism
Weak: colorless-(greenish) yellow
Weak to distinct brownish red-green-yellow
Dispersion
0.020.33
0.005
1
👆🏻
Transparency
-
Transparent, Translucent
Refractive Index
1.650-1.6772.609-2.903
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
tetragonal
Birefringence
0.019-0.0250.296
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Physical
Neurological
Enhances mental clarity and focus
-
Cardiovascular
-
-
Respiratory
Good
Good
Reproductive
-
-
Digestive
-
-
Psychology
Harmony
Clarity
Healing
Emotional healing
Physical healing
Qualities Associated
Communication
Awareness